Title: Analysis of the effect of driving motor on electric vehicle dynamic performance

Authors: Wanyou Huang; Guangcan Wang; Mingjin Yu

Addresses: College of Automotive Engineering, Shandong Jiaotong University, JiNan, 250357, China ' College of Automotive Engineering, Shandong Jiaotong University, JiNan, 250357, China ' College of Automotive Engineering, Shandong Jiaotong University, JiNan, 250357, China

Abstract: Dynamic performance is the most essential and important performance for vehicles. To find influencing rules on electric vehicle (EV) dynamic performance, this paper tests and analyses the effect of driving motor system and transmission gear selection on EV dynamic performance. By taking an AC asynchronous motor with rated power of 32 kW as the research object, tests are performed to analyse the effect of motor torque in a high-speed flux-weakening range, as well as the effect of motor temperature and bus voltage on motor driving torque. Tests are performed to analyse the effect of motor driving torque limit on dynamic performance. Additionally, real vehicle tests are taken to analyse the influence of transmission gear selection on EV dynamic performance. The above-mentioned research could provide the basis for the matching among EV powertrain key parts, and the basis for the optimised control of EV dynamic performance.

Keywords: electric vehicle; dynamic performance; influencing factor; driving motor system.

DOI: 10.1504/IJEHV.2017.089874

International Journal of Electric and Hybrid Vehicles, 2017 Vol.9 No.4, pp.350 - 360

Available online: 13 Feb 2018

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